EP3884175B1 - Agencement de fixation d'un écrou - Google Patents

Agencement de fixation d'un écrou Download PDF

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Publication number
EP3884175B1
EP3884175B1 EP19887218.6A EP19887218A EP3884175B1 EP 3884175 B1 EP3884175 B1 EP 3884175B1 EP 19887218 A EP19887218 A EP 19887218A EP 3884175 B1 EP3884175 B1 EP 3884175B1
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EP
European Patent Office
Prior art keywords
nut
threaded
locking element
threaded portion
bolt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19887218.6A
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German (de)
English (en)
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EP3884175A4 (fr
EP3884175A1 (fr
Inventor
Øyvind KARLSEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bondura Technology AS
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Bondura Technology AS
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Publication date
Application filed by Bondura Technology AS filed Critical Bondura Technology AS
Publication of EP3884175A1 publication Critical patent/EP3884175A1/fr
Publication of EP3884175A4 publication Critical patent/EP3884175A4/fr
Application granted granted Critical
Publication of EP3884175B1 publication Critical patent/EP3884175B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • F16B39/122—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts foreseen with mating surfaces inclined, i.e. not normal, to the bolt axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/36—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt with conical locking parts, which may be split, including use of separate rings co-operating therewith
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • F16B39/16—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread

Definitions

  • the invention relates to an arrangement for securing a nut on a threaded bolt comprising a bolt shaft projecting from a bolt head and being provided, at an opposite end portion, with a first threaded portion arranged to engage with an internal threaded portion of the nut, the nut and the bolt head being arranged to abut against adjacent elements, where a nut-locking element is provided with a threaded portion arranged to engage with a second threaded portion of the threaded bolt, the second threaded portion being arranged externally on a stepped end portion of the threaded bolt and being concentric with and having a smaller pitch than the first threaded portion, and the nut-locking element being provided with a friction portion arranged to rest supportingly against a corresponding friction portion on the nut.
  • Attempts to prevent a nut from coming loose from its abutment against an element which is held together with an adjacent element by means of said nut and an associated threaded bolt have been made by means of a wide range of arrangements, among other things by increasing the friction between the threads of the nut and the bolt.
  • the closest prior art is forming the nut as a clamping nut; that is to say, at least parts of an outward-facing end portion of the nut rest more tightly against the threads of the bolt than the threads of the nut, typically by the nut being provided with an oval collar portion.
  • a so-called nyloc nut comprises an integrated plastic ring in its outward-facing end portion, of a smaller diameter than the threads of the nut.
  • a locking element engaging with both the nut and the bolt for example a locking pin having been passed through a radial bore in the bolt and engaging with cut-outs in a nut of the type called a castellated nut, or a lock washer engaging with, for example, an axial groove in the bolt in a manner preventing rotation and being bent into abutment against the polygonal jacket of the nut.
  • the counternut may have a dimension which is equal to or smaller than that of the main nut (the first nut).
  • JP 5360848 B1 discloses a nut locking device focused in providing a nut locking function, the device including a first nut that is right-hand inner threaded and a second nut that is left-hand inner threaded.
  • the bolt shaft has two threaded segments, each segment being configured with a respectively matching outer threading for each nut.
  • the two nuts are used when fastening two elements together. Once the nuts are tightened, the opposing threading directions are described as reliably preventing loosening against a force in the loosening direction of the first nut, and that the effect of preventing loosening is described as being high.
  • the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art or at least provide a useful alternative to the prior art.
  • an arrangement comprising a threaded bolt and a nut, the arrangement being configured to secure the nut on the threaded bolt comprising a bolt shaft projecting from a bolt head and being provided, in an opposite end portion, with a first threaded portion arranged to engage with an internal threaded portion of the nut, the nut and the bolt head being arranged to abut against adjacent elements.
  • the arrangement further comprises a nut-locking element provided with a threaded portion arranged to engage with a second threaded portion of the threaded bolt, the second threaded portion being arranged externally on a stepped end portion of the threaded bolt and being concentric with the first threaded portion.
  • An end portion of the nut comprises a conical first abutment surface which forms a first friction portion, and the nut-locking element is provided with a second friction portion arranged to rest supportingly against the first friction portion.
  • the nut-locking element is provided with an end portion, the end portion being provided with a conical second abutment surface, which is complementary to the conical first abutment surface of the nut, forming the second friction portion.
  • the end portion is an elongated, sleeve-shaped portion with an internal diameter which is larger than that of the first threaded portion of the threaded bolt and is arranged to surround part of the first threaded portion and extend towards the nut.
  • the second threaded portion has a smaller pitch than the first threaded portion.
  • the first threaded portion and the second threaded portion have the same thread direction.
  • the arrangement secures a nut on a threaded bolt by a nut-locking element being arranged to releasably engage with the threaded bolt and the nut that is in engagement with a first threaded portion of the threaded bolt.
  • the different pitches between the first and the second threaded portions result in the fact that if an attempt is made to screw the nut outwards, it thereby trying to pull the nut-locking element along in the rotation, the nut will have a greater axial movement than the nut-locking element. The nut is thereby pressed against the nut-locking element so that the nut is prevented from coming loose.
  • the second friction portion restrains the nut from rotating relative to the nut-locking element, by abutment against a portion of the nut.
  • the threaded connection of the nut-locking element to the threaded bolt may be formed with a friction-enhancing shape or surface.
  • the second threaded portion may be formed as internal threads in a bore in an end portion of the threaded bolt.
  • the first threaded portion of the threaded bolt has an axial extent outside the nut sufficiently large to form an engagement portion for an axial-tension tool arranged to apply an axial tensioning to the threaded bolt at a distance from the nut during a tightening of the nut against the nearest one of the adjacent elements.
  • the first abutment surface of the nut is conically tapering externally from an external engagement portion on the periphery of the nut
  • the second abutment surface of the nut-locking element is conically tapering internally from the end of the nut-locking element.
  • the friction portion of the nut-locking element may be formed as an external cylindrical portion which surrounds a conical section of the end portion of the threaded bolt and which, by the abutment of an internal conical portion against the conical section of the threaded-bolt end portion, is expandable into abutment against a portion of the centre bore of the nut, typically a portion of the threads of the nut or some other abutment surface arranged in the centre bore of the nut near the end of the nut that faces the nut-locking element.
  • the friction portion may be formed on a salient end portion of the nut-locking element, arranged to be brought into abutment against an external portion of the nut.
  • the friction portion of the nut-locking element may be formed as an annular collar end face lying in a plane arranged perpendicularly to the centre axis of the nut, or as a conical inward-facing surface.
  • the friction portion may possibly consist of a circular transition portion between the collar end face and an inward-facing collar surface which, in this embodiment variant, may be cylindrical.
  • the external abutment portion of the nut may be an annular end-portion face lying in a plane arranged perpendicularly to the centre axis of the nut or being formed as an outward-facing conical surface on the end portion of the nut, or the abutment portion may possibly consist of a circular transition portion between the end-portion face of the nut and the outward-facing conical surface, possibly between the end-portion face of the nut and an external cylinder surface of the nut.
  • the nut-locking element comprises a coupling portion arranged in the outward-facing end portion of the nut-locking element for releasable connection to a tool, for example in the form of an external, polygonal end portion or a centric recess with a polygonal cross section.
  • the friction portion of the nut-locking element and the facing abutment portion of the nut are preferably formed with friction-enhancing surfaces, for example by said surfaces being machined with great roughness, being serrated or being coated with a friction-enhancing material.
  • the periphery of the nut-locking element forms a coupling portion which is arranged to receive a screwing tool and is formed as an end portion with an externally polygonal cross section.
  • the nut-locking element may be provided with a coupling portion which is arranged to receive a screwing tool and is formed as an end portion with an internally polygonal recess.
  • the coupling portion extends over the entire axial length of the nut-locking element.
  • the first threaded portion of the threaded bolt and the threaded portion of the nut may be formed with friction-reducing thread surfaces and/or a friction-reducing thread shape, for example by said threads being coated with a friction-reducing material, for example a Xylan ® coating.
  • the first threaded portion of the threaded bolt and the threaded portion of the nut may advantageously be coated with an antifriction material.
  • the threaded portion of the nut-locking element may be formed in an axial through bore in the nut-locking element.
  • the threaded portion of the nut-locking element may be formed in a non-through bore in the nut-locking element, the nut-locking element being formed with a closed outward-facing end portion and surrounding the second threaded portion.
  • the second threaded portion may be arranged externally on a stepped end portion of the threaded bolt and may be separated from the first threaded portion by a conical transition portion
  • the nut-locking element may be provided with an internal conical surface which is arranged to rest against the conical transition portion and is surrounded by a cylindrical surface which, by radial expansion, is arranged to rest supportingly against a surrounding portion of the nut.
  • a portion of the nut-locking element which is defined by the internal, conical surface, may alternatively be arranged to expand radially.
  • the second threaded portion may be arranged in a centric, axial cut-out in the end portion of the threaded bolt, the threaded portion of the nut-locking element being arranged externally on a peg, the nut-locking element being provided with a salient end portion, and the friction portion being arranged near the periphery of the salient end portion.
  • the friction portion may be formed as an annular collar end face lying in a plane that is perpendicular to the centre axis of the nut or be formed as an internal conical surface on the salient end portion, or be formed as an edge portion between two faces on the salient end portion.
  • the nut may be provided with an abutment portion for receiving the friction portion of the nut-locking element, the abutment portion being formed as a stepped end portion of the nut.
  • the reference numeral 1 indicates a threaded bolt provided with a bolt head 11 and a bolt shaft 12.
  • a first threaded portion 122 is arranged externally on the bolt shaft 12.
  • the threaded bolt 1 is shown arranged in bores 41 in two elements 4, 4a that are to be joined by means of the threaded bolt 1 and a nut 2.
  • the nut 2 is provided with an internal nut-thread portion 21, which is adapted for engagement with the first threaded portion 122 of the threaded bolt 1, and an external engagement portion 23 for a tightening tool, not shown, typically of a polygonal cross section, especially a hexagonal cross section.
  • a nut-locking element 3 is arranged on a second threaded portion 123 on the end portion 121 of the threaded bolt 1.
  • the second threaded portion 123 has a smaller pitch than the first threaded portion 122.
  • connection between the nut 2 and the nut-locking element 3 may be provided in various ways.
  • FIG. 1 in which a first non-claimed embodiment is shown.
  • the end portion 121 of the threaded bolt 1 is stepped, and the second threaded portion 123 is arranged outside the first threaded portion 122 and with a smaller diameter than the first threaded portion 122, but with the same thread direction as the first threaded portion 122.
  • a conical transition portion 124 is formed between the first and the second threaded portions 122, 123, providing an abutment surface for an internal, conical surface 312 of the nut-locking element 3.
  • An external, conical surface 312a surrounding the internal, conical surface 312 forms a friction portion 31 which is arranged to rest against a surrounding end portion of the threaded portion 21 of the nut 2, possibly against an internal abutment portion 22 formed as an extension of the nut-thread portion 21, shown here as a conical abutment portion in the mouth of the threaded bore of the nut 2.
  • the conical portions 312, 312a of the nut-locking element 3 may be radially expandable. The expansion is enabled by the nut-locking element 3 being formed of an elastic material, and possibly by one or more slits directed axially (not shown) cutting the conical portions 312, 312a.
  • the nut-locking element 3 Adjacent to the friction portion 31, the nut-locking element 3, in this embodiment, is provided with a coupling portion 32 surrounding a threaded portion 33 arranged to engage with the second threaded portion 123 on the stepped part of the bolt shaft 12.
  • the coupling portion 32 is provided with an externally polygonal end portion 321.
  • Figure 2 shows an exemplary embodiment in which the nut 2 is provided with an outward-facing conical abutment surface 22b which falls towards the stepped end portion 121 of the threaded bolt 1 and is complementary to an internal, conical abutment surface 312 on the nut-locking element 3 which, in this embodiment, is salient.
  • the bore with the internal threaded portion 33 in the nut-locking element 3 according to figures 1 and 2 is not restricted to extending axially through the nut-locking element 3, as the nut-locking element 3 may also be formed with a closed outward-facing end portion, so that the nut-locking element 3 completely encloses the stepped part of the bolt shaft 12.
  • FIG. 1 A second non-claimed embodiment of the invention is shown.
  • the variants of this embodiment have in common that the second threaded portion 123 of the end portion 121 of the threaded bolt 1 is formed internally in a centric cut-out 125, and that the nut-locking element 3 includes a salient, circular end portion 311 which, when the nut 2 is locked, is resting against a circular abutment portion 22 on the nut 2.
  • the threaded portion 33 of the nut-locking element 3 is provided on a cylindrical peg 34 arranged centrically.
  • the salient end portion 311 of the nut-locking element 3 is provided with a friction portion 31 formed as an internal, conical surface 311b resting against a circular edge portion 22d between an outward-facing, stepped abutment portion 22 and an external cylinder surface 22c on the end of the nut 2.
  • the salient end portion 311 of the nut-locking element 3 is provided with a friction portion 31 formed as an annular collar end face 311a lying in a plane perpendicular to the centre axis of the nut-locking element 3 and abutting against an end face 22a of the outward-facing, stepped abutment portion 22 of the nut 2.
  • the salient end portion 311 of the nut-locking element 3 is provided with a friction portion 31 formed by an edge portion 311d between an annular collar end face 311a and an internal cylinder surface 311c, the edge portion 311d abutting against an external, conical abutment surface 22b on the outward-facing, stepped abutment portion 22 of the nut 2.
  • the salient end portion 311 of the nut-locking element 3 is provided with a friction portion 31 formed as an internal, conical surface 311b abutting against an external, conical abutment surface 22b on the outward-facing stepped abutment portion 22 of the nut 2.
  • the nut-locking element 3 according to the embodiments shown in figures 3, 4 and 5 is provided with a coupling portion 32 for a screwing tool (not shown), shown here as an externally polygonal end portion 321.
  • the coupling portion 32 is formed as an internally polygonal end-portion recess 322 arranged centrically in the nut-locking element 3.
  • FIG. 7 shows an arrangement according to the invention with another exemplary embodiment of the nut 2 and the nut-locking element 3.
  • the end portion 121 of the threaded bolt 1 is stepped, and the second threaded portion 123 is arranged outside the first threaded portion 122 and with a smaller diameter than the first threaded portion 122, but with the same thread direction as the first threaded portion 121.
  • the outward-facing end of the nut 2 is provided with a conical first abutment surface 22a, shown here as tapering from the external engagement portion 23 of the nut 2 for the tightening tool, not shown, typically of a polygonal cross section, especially a hexagonal cross section.
  • the nut-locking element 3 is provided with an internal threaded portion 33 arranged to engage with the second threaded portion 123 of the threaded bolt 1.
  • the nut-locking element 3 is provided with a sleeve-shaped end portion 3a with an internal diameter larger than that of the first threaded portion 122 of the threaded bolt 1.
  • the end portion 3a is provided with a conical second abutment surface 312b, shown here as an internal conical surface rising towards the end of the nut-locking element 3, complementary to and arranged to rest supportingly against the conical first abutment surface 22a of the nut 2.
  • the conical first abutment surface 22a of the nut 2 and the conical second abutment surface 312b of the nut-locking element 3 form cooperating friction portions 24, 31.
  • the sleeve-shaped end portion 3a of the nut-locking element 3 has a length sufficiently large to extend over the part of the first threaded portion 122 of the threaded bolt 1 that projects from the nut 2 when the nut 2 and the bolt head 11 have been tightened against the elements 4, 4a that are to be joined.
  • the first threaded portion 122 of the threaded bolt 1 has a length which is sufficiently large for an axial-tension tool (not shown) to engage with the part of the first threaded portion 122 of the threaded bolt 1 that projects from the nut 2, to tension the threaded bolt 1 in the axial direction, so that the nut 2 may be rotated into abutment against the respective element 4a at a moderate torque.
  • an axial-tension tool then relieves the threaded bolt 1
  • the axial tensioning of the bolt 1 will be maintained by the abutments of the nut 2 and the bolt head 11 against the elements 4, 4a, without it having been necessary to apply a great torque to the threaded bolt 1 and the nut 2.
  • the nut 2 is then secured by the sleeve-shaped end portion 3a of the nut-locking element 3 being slipped over the projecting first threaded portion 122 of the threaded bolt 1, and the nut-locking element 3 being rotated into engagement between the internal threaded portion 33 of the nut-locking element 3 and the second threaded portion 123 of the threaded bolt 1 until the conical second abutment surface 312b of the nut-locking element 3 rests supportingly and lockingly against the conical first abutment surface 22a of the nut 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Dowels (AREA)

Claims (9)

  1. Agencement comprenant un boulon fileté (1) et un écrou (2), l'agencement étant configuré pour fixer l'écrou (2) sur le boulon fileté (1) comprenant une tige de boulon (12) de goujon faisant saillie à partir d'une tête de boulon (11) et étant munie, dans une partie d'extrémité (121) opposée, d'une première partie filetée (122) agencée pour se mettre en prise avec une partie filetée (21) interne de l'écrou (2), l'écrou (2) et la tête de boulon (11) étant agencés pour venir en butée contre des éléments adjacents (4, 4a),
    dans lequel l'agencement comprend en outre un élément de verrouillage d'écrou (3) muni d'une partie filetée (33) agencée pour se mettre en prise avec une deuxième partie filetée (123) du boulon fileté (1), la deuxième partie filetée (123) étant agencée de façon externe sur une partie d'extrémité (121) étagée du boulon fileté (1) et étant concentrique par rapport à la première partie filetée (122),
    dans lequel une partie d'extrémité de l'écrou (2) comprend une première surface de butée (22a, 22b) conique qui forme une première partie de frottement (24), et l'élément de verrouillage d'écrou (3) est muni d'une deuxième partie de frottement (31) agencée pour reposer en appui contre la première partie de frottement (24),
    dans lequel l'élément de verrouillage d'écrou (3) est muni d'une partie d'extrémité (3a), la partie d'extrémité (3a) étant munie d'une deuxième surface de butée (312, 312b) conique, qui est complémentaire à la première surface de butée (22a, 22b) conique de l'écrou (2), formant la deuxième partie de frottement (31),
    dans lequel la partie d'extrémité (3a) est une partie allongée en forme de manchon avec un diamètre interne qui est supérieur à celui de la première partie filetée (122) du boulon fileté (1) et qui est agencée pour entourer une partie de la première partie filetée (122) et s'étendre vers l'écrou (2),
    dans lequel la deuxième partie filetée (123) présente un pas plus petit que la première partie filetée (122), caractérisé en ce que la première partie filetée (122) et la deuxième partie filetée (123) présentent la même direction de filetage.
  2. Agencement selon la revendication 1, dans lequel la première partie filetée (122) du boulon fileté (1) présente une extension axiale à l'extérieur de l'écrou (2) suffisamment grande pour former une partie de mise en prise pour un outil de tension axiale agencé pour appliquer une tension axiale au boulon fileté (1) à une distance de l'écrou (2) lors d'un serrage de l'écrou (2) contre l'élément le plus proche parmi les éléments adjacents (4, 4a).
  3. Agencement selon la revendication 1, dans lequel la première surface de butée (22a) de l'écrou (2) s'effile de manière conique à l'extérieur depuis une partie de mise en prise externe (23) sur la périphérie de l'écrou (2), et la deuxième surface de butée (312b) de l'élément de verrouillage d'écrou (3) s'effile de manière conique à l'intérieur depuis l'extrémité de l'élément de verrouillage d'écrou (3).
  4. Agencement selon la revendication 1, dans lequel la périphérie de l'élément de verrouillage d'écrou (3) forme une partie d'accouplement (32) qui est agencée pour recevoir un outil de vissage et est formée comme une partie d'extrémité (321) avec une section transversale polygonale externe.
  5. Agencement selon la revendication 4, dans lequel la partie d'accouplement (32) s'étend sur toute la longueur axiale de l'élément de verrouillage d'écrou (3).
  6. Agencement selon la revendication 1, dans lequel la première partie filetée (122) du boulon fileté (1) et la partie filetée (21) de l'écrou (2) sont formées avec des surfaces de filetage réduisant le frottement et/ou une forme de filetage réduisant le frottement.
  7. Agencement selon la revendication 6, dans lequel la première partie filetée (122) du boulon fileté (1) et la partie filetée (21) de l'écrou (2) sont revêtues d'un matériau anti-frottement.
  8. Agencement selon la revendication 1, dans lequel la partie filetée (33) de l'élément de verrouillage d'écrou (3) est formée dans un alésage traversant axial dans l'élément de verrouillage de l'écrou (3).
  9. Agencement selon la revendication 1, dans lequel la partie filetée (33) de l'élément de verrouillage d'écrou (3) est formée comme un alésage non traversant dans l'élément de verrouillage d'écrou (3), l'élément de verrouillage d'écrou (3) étant formé avec une partie d'extrémité fermée tournée vers l'extérieur et entourant la deuxième partie filetée (123).
EP19887218.6A 2018-11-23 2019-11-21 Agencement de fixation d'un écrou Active EP3884175B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20181503A NO20181503A1 (no) 2018-11-23 2018-11-23 Arrangement for sikring av en mutter
PCT/NO2019/050255 WO2020106161A1 (fr) 2018-11-23 2019-11-21 Agencement de fixation d'un écrou

Publications (3)

Publication Number Publication Date
EP3884175A1 EP3884175A1 (fr) 2021-09-29
EP3884175A4 EP3884175A4 (fr) 2022-08-10
EP3884175B1 true EP3884175B1 (fr) 2024-06-26

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Application Number Title Priority Date Filing Date
EP19887218.6A Active EP3884175B1 (fr) 2018-11-23 2019-11-21 Agencement de fixation d'un écrou

Country Status (4)

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US (1) US20210396268A1 (fr)
EP (1) EP3884175B1 (fr)
NO (1) NO20181503A1 (fr)
WO (1) WO2020106161A1 (fr)

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US20210396268A1 (en) 2021-12-23
EP3884175A4 (fr) 2022-08-10
WO2020106161A1 (fr) 2020-05-28
EP3884175A1 (fr) 2021-09-29
NO20181503A1 (no) 2020-05-25

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